Gardyn Devices Privileged IoTHubowner Key Exposure

Executive Summary

This vulnerability involves Gardyn devices exposing a privileged iothubowner key. If a malicious user gains access to this key, they can invoke an IoTHub Registry Manager function that reveals connection information for all Gardyn Home Kit and Studio devices.

Additionally, the attacker can execute arbitrary commands on a specific connected device and potentially pivot to other devices on the user's network.

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Compliance Impact

The provided information does not explicitly mention the impact of CVE-2026-13768 on compliance with common standards and regulations such as GDPR or HIPAA.

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Mitigation Strategies

To mitigate this vulnerability, ensure your Gardyn devices are connected to the Internet and running firmware version 619 or later.

Update the Gardyn mobile app to version 2.11.0 or later.

The update process is automatic once devices are online, but you can verify the firmware and app versions via the app under Settings → Advanced.

As a precaution, if you are concerned about network exposure, consider resetting your Wi-Fi passwords.

If you notice any unusual device behavior or have security concerns, contact Gardyn support via email, phone, or live chat.

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Detection Guidance

This vulnerability involves exposure of a privileged iothubowner key that allows unauthorized access to IoTHub Registry Manager functions and execution of arbitrary commands on Gardyn devices. Detection would focus on identifying unauthorized use or exposure of this key and unusual command executions on the devices.

Users are advised to ensure their Gardyn devices are running firmware version 619 or later and the Gardyn mobile app is updated to version 2.11.0 or later, as fixes are automatically installed when devices connect to the Internet.

While no specific detection commands are provided in the available resources, general detection steps could include monitoring network traffic for unauthorized API calls to the IoTHub Registry Manager, checking for unusual SSH or command execution activity on Gardyn devices, and verifying device firmware and app versions.

For example, network administrators might use commands or tools to monitor network traffic for suspicious connections or API requests related to the IoTHub, such as using packet capture tools (e.g., tcpdump, Wireshark) to filter for IoTHub communication or scanning for exposed services on Gardyn devices.

Additionally, verifying device firmware and app versions can be done through the Gardyn mobile app under Settings → Advanced, ensuring they meet the minimum secure versions.

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Impact Analysis

The vulnerability can have severe impacts including unauthorized access to device connection information, execution of arbitrary commands on connected devices, and lateral movement within the user's network.

This could lead to compromise of multiple devices, loss of control over the devices, potential data breaches, and disruption of device functionality.

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